/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
 * Licensed under the MIT License (LICENSE.txt).
 *
 * Version: 3.1.6
 *
 * Requires: jQuery 1.2.2+
 */
define(function(){
	return function($)
	{
		!(function($){
			var toFix  = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'],
	        toBind = ( 'onwheel' in document || document.documentMode >= 9 ) ?
	                    ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'],
	        slice  = Array.prototype.slice,
	        nullLowestDeltaTimeout, lowestDelta;

	    if ( $.event.fixHooks ) {
	        for ( var i = toFix.length; i; ) {
	            $.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
	        }
	    }

	    $.event.special.mousewheel = {
	        version: '3.1.6',

	        setup: function() {
	            if ( this.addEventListener ) {
	                for ( var i = toBind.length; i; ) {
	                    this.addEventListener( toBind[--i], handler, false );
	                }
	            } else {
	                this.onmousewheel = handler;
	            }
	        },

	        teardown: function() {
	            if ( this.removeEventListener ) {
	                for ( var i = toBind.length; i; ) {
	                    this.removeEventListener( toBind[--i], handler, false );
	                }
	            } else {
	                this.onmousewheel = null;
	            }
	        }
	    };

	    $.fn.extend({
	        mousewheel: function(fn) {
	            return fn ? this.bind('mousewheel', fn) : this.trigger('mousewheel');
	        },

	        unmousewheel: function(fn) {
	            return this.unbind('mousewheel', fn);
	        }
	    });


	    function handler(event) {
	        var orgEvent   = event || window.event,
	            args       = slice.call(arguments, 1),
	            delta      = 0,
	            deltaX     = 0,
	            deltaY     = 0,
	            absDelta   = 0;
	        event = $.event.fix(orgEvent);
	        event.type = 'mousewheel';

	        // Old school scrollwheel delta
	        if ( 'detail'      in orgEvent ) { deltaY = orgEvent.detail * -1;      }
	        if ( 'wheelDelta'  in orgEvent ) { deltaY = orgEvent.wheelDelta;       }
	        if ( 'wheelDeltaY' in orgEvent ) { deltaY = orgEvent.wheelDeltaY;      }
	        if ( 'wheelDeltaX' in orgEvent ) { deltaX = orgEvent.wheelDeltaX * -1; }

	        // Firefox < 17 horizontal scrolling related to DOMMouseScroll event
	        if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
	            deltaX = deltaY * -1;
	            deltaY = 0;
	        }

	        // Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
	        delta = deltaY === 0 ? deltaX : deltaY;

	        // New school wheel delta (wheel event)
	        if ( 'deltaY' in orgEvent ) {
	            deltaY = orgEvent.deltaY * -1;
	            delta  = deltaY;
	        }
	        if ( 'deltaX' in orgEvent ) {
	            deltaX = orgEvent.deltaX;
	            if ( deltaY === 0 ) { delta  = deltaX * -1; }
	        }

	        // No change actually happened, no reason to go any further
	        if ( deltaY === 0 && deltaX === 0 ) { return; }

	        // Store lowest absolute delta to normalize the delta values
	        absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );
	        if ( !lowestDelta || absDelta < lowestDelta ) {
	            lowestDelta = absDelta;
	        }

	        // Get a whole, normalized value for the deltas
	        delta  = Math[ delta  >= 1 ? 'floor' : 'ceil' ](delta  / lowestDelta);
	        deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
	        deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);

	        // Add information to the event object
	        event.deltaX = deltaX;
	        event.deltaY = deltaY;
	        event.deltaFactor = lowestDelta;

	        // Add event and delta to the front of the arguments
	        args.unshift(event, delta, deltaX, deltaY);

	        // Clearout lowestDelta after sometime to better
	        // handle multiple device types that give different
	        // a different lowestDelta
	        // Ex: trackpad = 3 and mouse wheel = 120
	        if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
	        nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);

	        return ($.event.dispatch || $.event.handle).apply(this, args);
	    }

	    function nullLowestDelta() {
	        lowestDelta = null;
	    }
		})($)
	}
})